Delta Air LinesDL
Flights DL3749 10:45 daily
live
Direct flights from Lewiston (LWS) to Seattle (SEA): 7 nonstop departures observed each week across 1 airline. The nonstop covers 419 km, an estimated 1 hour 2 minutes in the air. Measured by Pro Flight Search from live flight boards at Lewiston and Seattle. Updated 18 September 2026 at 13:56 UTC.
LWS
Lewiston
tracking
SEA
Seattle
smooth · +5
419 km · ~1h 02m est.
Running clean · 1 airline · 7x weekly · nonstop
90 / 100
route health from live LWS and SEA delay boards
Flight time~1h 02mestimated from route distance
Weekly departures7x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Delta Air Lines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysAirports right now
live boardsnext sweep in 120s
How the Lewiston to Seattle route actually runs
Pro Flight Search records official board updates for nonstop LWS to SEA flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — Lewiston (LWS) to Seattle (SEA) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/LWS-SEA
LWS to SEA questions
Is LWS–SEA running on time right now?
Smooth skies ahead. The arrival side at SEA is the weaker end, route health score 90/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from LWS to SEA?
Great-circle distance is 419 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 60–66 min gate-to-gate on this route.
How often does LWS–SEA fly?
Delta Air Lines runs the route with about 7 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.
What does the route health score measure?
A blend of departure-side delay at LWS and arrival-side delay at SEA, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
.